package com.lxp.common.utils;

import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * 时间工具类
 *
 * @author Administrator
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 计算两个时间差
     */
    public static long getYearCount(Date endDate, Date nowDate) {
        long ny = 1000 * 24 * 60 * 60 * 365;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long year = diff / ny;

        return year;
    }

    /**
     * 毫秒数转时间天数,double
     */
    public static String getDateDays(Long time) {
        long daysTime = 1000 * 24 * 60 * 60;
        long hourTime = 1000 * 60 * 60;
        long minTime = 1000 * 60;
        // 计算多少天
        long days = time / daysTime;
        double date = (double) days;
        // 计算多少小时
        long hour = time / hourTime;
        double hours = (double) hour / 24 - days;
        date += hours;
        // 计算多少分钟
        long mins = time / minTime;
        double min = ((double) mins / 24 / 60) - days;
        date += min;
        return String.format("%.2f", date);
    }

    /**
     * 毫秒数转时间天数
     */
    public static String convertDate2Days(Long time) {
        if (time == 0) {
            return "0";
        }
        String days = "", hrs = "", mins = "", secs = "";
        long day = time / 1000 / 60 / 60 / 24;
        long hr = time / 1000 / 60 / 60 % 24;
        long min = time / 1000 / 60 % 60;
        long sec = time / 1000 % 60;
        if (day < 9) {
            days = ('0' + String.valueOf(day));
        } else {
            days = String.valueOf(day);
        }
        if (hr < 9) {
            hrs = ('0' + String.valueOf(hr));
        } else {
            hrs = String.valueOf(hr);
        }
        if (min < 9) {
            mins = ('0' + String.valueOf(min));
        } else {
            mins = String.valueOf(min);
        }
        if (sec < 9) {
            secs = ('0' + String.valueOf(sec));
        } else {
            secs = String.valueOf(sec);
        }
        return days + "天" + hrs + "时" + mins + "分" + secs + "秒";
    }

    /**
     * 增加天数
     */
    public static Date addDate(Date nowDate, int days) {
        Calendar c = Calendar.getInstance();
        c.setTime(nowDate);
        c.add(Calendar.DAY_OF_MONTH, days);

        return c.getTime();
    }
    /**
     * 获取指定年月的最后一天
     * @param year
     * @param month
     * @return
     */
    public static String getLastDayOfMonth1(int year, int month) {
        Calendar cal = Calendar.getInstance();
        //设置年份
        cal.set(Calendar.YEAR, year);
        //设置月份
        cal.set(Calendar.MONTH, month-1);
        //获取某月最大天数
        int lastDay = cal.getActualMaximum(Calendar.DATE);
        //设置日历中月份的最大天数
        cal.set(Calendar.DAY_OF_MONTH, lastDay);
        //格式化日期
        SimpleDateFormat sdf = new SimpleDateFormat("dd");
        return sdf.format(cal.getTime());
    }
}
